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[" Q.8.If "p^(2)=a^(2)cos^(2)theta+b^(2)...

[" Q.8.If "p^(2)=a^(2)cos^(2)theta+b^(2)sin^(2)theta," then prove that "],[qquad p+(d^(2)p)/(d theta^(2))=(a^(2)b^(2))/(p^(3))" (Jiwaji "1997," Jabalpur "2003,06)]

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